grpc_session_attr_initialize_np - Initializes session attributes with function handle.
  grpc_error_t grpc_session_attr_initialize_np(grpc_function_handle_t *handle, grpc_session_attr_t_np *attr)
  grpc_function_handle_t *handle  grpc_session_attr_t_np *attrThe grpc_session_attr_initialize_np() function initializes session attributes.
This function is MT-safe.
If successful, GRPC_NO_ERROR is returned. In the case of an error, Error code is returned.
  GRPC_NOT_INITIALIZED  GRPC_INVALID_FUNCTION_HANDLE  GRPC_OTHER_ERROR_CODE